JPH05340696A - Proximity fuse control device - Google Patents

Abstract

PURPOSE:To eliminate a range in which an entering object is non-detectable, to reliably demolish a target object by accurately converging the pieces of a warhead to the target object at an optimum timing, and to make it difficult to detect by the mating side and suppress disturbance as well as reduce power consumption. CONSTITUTION:Variation and control of the projection set angle of a projection beams are made on a beam projecting means 17 based on a control signal VBC for controlling setting of beams generated based on a relative speed signal VC indicating a speed relative to that of a target object 30. Control through which only a detecting system corresponding to the presence direction of the target object is operated is made on a target detector 11 based on a source charge control signal P2 outputted from a source control means 61 in response to a source charge signal P1 indicated when a flying object flies under a given condition, a signal SR, by means of which a distance from the target object is indicated, and a relative speed signal VC.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a proximity fuze control device, and more particularly, to a projectile equipped with a warhead,
The present invention relates to a device for instructing an ignition operation of ammunition of the warhead when the flying object approaches a target object.

[0002]

2. Description of the Related Art Conventionally, a proximity fuze control device for a flying object of this type projects a radio wave or a light wave beam from the flying object,
When a target object enters and passes through the projection beam, the reflected wave from the target object is received to detect the target object, and a signal based on the detection is used to immediately or a predetermined delay time to the detonator. It was later designed to activate the firing of warhead ammunition. Therefore, depending on the relative positional relationship between the flying object and the target object, the operation may not always be performed in the optimum state (optimally, the ignition timing at which the bullet piece of the warhead hits the target object).

Further, in a radio or light wave type proximity fuze control apparatus for setting an initiation timing by using a relative velocity signal (with respect to a target object) output from another device mounted on a flying object, It is possible to set the detonation timing for the relative speed, but it is extremely difficult to set the detonation timing for the distance (miss distance) to the point where the target object and the bullet fragment collide. is there. In other words, it is necessary to delay the detonation of the warhead until it explodes due to the detonation signal, and the time depending on the miss distance until the bullet pieces scatter and reach the target.

Therefore, when the target object passes a position relatively far from the flying object, the target object passes before the bullet pieces of the warhead reach the target object, and conversely, the target object If it is located very close to the flying object, the inconvenience arises that the bullet passes through the front of the target object. In other words, there is a drawback that the target object will be out of the range of scattering of the bullet pieces of the warhead, so that the warhead cannot effectively destroy or damage the target object. As a result, the ability of the flying object to defeat the target is hindered, and in particular, as seen in recent years, the flying object has an extremely high attack speed from a flying object (for example, SSM) to a cruise flying object or a low speed aircraft such as a rotary wing aircraft. There is a problem in that it is not possible to send the optimum detonation timing signal for destroying relative speeds that are wide in range up to the target.

In order to deal with this, a method of detecting the intruding target object by reducing the tilt angle (direction angle) of a single projection beam in the forward direction, or a method of fixing a plurality of projection beams and intruding the target object A method of detecting an object has been proposed. Further, conventionally known proximity fuze control devices for projectiles are not designed to be operated in a state in which they are mounted on an aircraft or a launch device at a ground base. That is, after the projectile is launched, when the projectile reaches a safe distance from the launch point by applying a prescribed acceleration, the safety release device for the warhead turns on the proximity fuse control device, When the device detects the target object, it sends the detonation timing signal of the target object to the detonator of the warhead using the velocity information (information indicating the relative velocity with the target object) output from the target guidance device. It has become.

[0006]

The method using a single projection beam fixed at a certain tilt angle has a disadvantage that the effective detection range of the meeting engagement angle with the target object is limited. However, there is an angle that cannot be detected depending on the angle of engagement and engagement, and as a result, the warhead cannot effectively destroy or damage the target object.

Further, the method of using a plurality of projection beams in a fixed manner has an advantage of being able to cover the above-mentioned limited range of the meeting and engagement angle.
Since a projector is required for each beam, the apparatus becomes complicated and the shape becomes large, which causes a problem in mounting on a flying object. In addition, there is also a disadvantage that the capacity of the power supply for supply required for a high-power light emitting element such as a high-frequency oscillator or a semiconductor laser and its associated circuit becomes large, which results in a large shape and size of the entire device including the power supply. There is.

On the other hand, the conventional fuze control device has hitherto been known as a projection beam (eg, a light beam) from the initial stage of flight.
Since it flies in the state of being projected, there is a problem that it is easy to be detected by the other party and it is easy to receive an interference signal (for example, interference light). In particular, in the case of the method of projecting a light beam, since the power of the entire device such as a high-power light emitting element such as a semiconductor laser and its signal processing circuit is turned on from the initial stage of flight, the intruding target object is detected. Therefore, there is a drawback that the capacity of the power supply for supplying each device of the flying object becomes large, which is a problem.

Since a fan beam of a light wave is projected in each quadrant direction for detecting the quadrant of the target object using a light beam projector (for example, a semiconductor laser), a large capacity is required for high-power emission. There is also a problem that a driving power source is required for each quadrant (projector). This is not preferable because it leads to an increase in power consumption. Further, since it is necessary to thermally control the heat generation of the semiconductor laser itself for a projection beam, if the heat capacity increases, the structure weight increases accordingly, and the shape and size and weight of the entire device including the driving power source increase. There is a drawback that

In view of the above problems in the prior art, the main object of the present invention is to eliminate an undetectable range for an intruding target object over a wide range from ultra-high speed to low speed, and to improve the timing of sending an initiation signal to a warhead. It is an object of the present invention to provide a proximity fuze control device that facilitates control and that can accurately destruct the target object by accurately concentrating the bullet pieces of the warhead at the optimum timing.

Another object of the present invention is to make it difficult for the other party to find out and be less likely to be disturbed, to reduce power consumption, and to eliminate the possibility of malfunction during a rear attack. It is to provide a proximity fuze control device. It is still another object of the present invention to provide a proximity fuze control device capable of suppressing unnecessary beam transmission output to improve confidentiality, reducing power consumption, and simplifying the device configuration. ..

[0012]

According to the present invention, in order to solve the above-mentioned problems, the present invention is mounted on a projectile equipped with a warhead, and when the projectile approaches a target object, an ignition operation of ammunition of the warhead is performed. For instructing and tracking the target object, and indicating a distance between the target object and a relative speed signal indicating a relative speed between the target object and the target object. Target guiding means for outputting a distance signal,
Beam projection for projecting a beam of a radio wave or a light wave in a cone shape at a certain set angle toward the front of the projectile in each of at least four quadrants divided in the entire circumferential direction around the axis of the projectile Means, a target detector that detects a reflected wave from the target object with respect to the projected beam and outputs a detection signal corresponding to the signal intensity for each quadrant, and the output detection signals are adjacent to each other. A circuit for comparing with a quadrant signal level, determining the existence quadrant of the target object based on the comparison result, and outputting an existence quadrant detection signal, and instructing the ignition operation based on the existence quadrant detection signal and the relative speed signal Means for generating a control signal for setting a projection angle of the projection beam based on the relative velocity signal, and an electric power when detecting that the flying object is flying under a predetermined condition. And a means for outputting a power-on signal for instructing power-on, and a means for outputting a power-on control signal for commanding power-supply based on the relative speed signal and the distance signal in response to the power-on signal, The projection setting angle of the projection beam is variably controlled with respect to the beam projection means based on the generated control signal, and the target detector is associated with the existence direction of the target object based on the power-on control signal. A proximity fuze control device is provided which is controlled so that only the detection system is activated.

In the proximity fuze control device, when the target guiding means further outputs an azimuth angle signal and an elevation angle signal indicating the position of the target object,
Means may be provided for converting the azimuth angle signal and the elevation angle signal into a quadrant control signal indicating the direction of arrival of the target object in response to the power-on control signal. In this case, the control signal is generated on the basis of the converted quadrant control signal and the relative speed signal, whereby power is supplied to the target detector only to the detection system corresponding to the direction in which the target object exists. Be seen.

Further, in the proximity fuze control device,
When the target guiding means further outputs a target direction angle signal indicating the direction angle at which the target object is present and an own-vehicle speed signal indicating the velocity of the flying object, the target direction angle signal and the own-vehicle speed signal Means may be provided for determining whether the attack is a forward attack or a backward attack based on the relative speed signal. In this case, the ignition operation of the ammunition of the warhead is commanded based on the forward / backward attack instruction signal indicating the result of the determination, the existing quadrant detection signal and the relative speed signal.

Further, the proximity fuze control device may include means for controlling the effective detection distance of the target object with respect to the target detector based on the azimuth angle signal, the elevation angle signal and the relative velocity signal.

[0016]

According to the above-mentioned structure, when detecting a target object coming into the projection beam of the radio wave or light wave projected toward the front of the flying object and sending the detonation signal to the warhead based on the detection of the target object. , The projection setting angle of the beam is variably controlled according to the penetration speed of the target object (that is, the relative speed with the target object), and the ignition operation of the warhead ammunition (that is, the generation timing of the detonation signal) is controlled based on that. I am trying.

Therefore, even if a target object in a wide range from ultra-high speed to low speed enters the projection beam, the projection angle of the beam can be appropriately switched according to the penetration speed, so that the conventional type can be seen. It is possible to eliminate the undetectable range. In addition, by controlling the timing of sending the detonation signal to the warhead according to the intrusion speed of the target object, the bullet pieces of the warhead can always be accurately and accurately concentrated on the target object at the optimum timing, and be surely destroyed. Is possible.

Further, when the flying object is flying under a predetermined condition, the power-on signal controls the operation of the power source, and in response to the control, the supply of the power source is instructed based on the relative speed signal and the distance signal. Based on this command, power is supplied to the target detector only to the detection system corresponding to the direction in which the target object exists. As a result, the operating time of the device can be significantly shortened, and thereby the power consumption can be reduced. Also, since the power supply to this device is started immediately before the meeting with the target object, there is an advantage that it is hard to be detected by the other party and it is less likely to be disturbed. Since the structure in which the projection angle of the beam is changed according to the speed is adopted, the projector for each beam as in the conventional type is not necessary, and the structure of the device is simplified. this is,
It also contributes to the reduction of power consumption.

Further, when the forward / backward attack determination means is provided, the detonation timing can be controlled so as to strike the bullet piece of the warhead into the fragile range of the target object, so that the shooting efficiency of the target object can be improved. It is possible to improve. Further, when the projection set angle of the projection beam is changed based on the control signal, the effective detection distance to the target object is variably controlled, and the transmission output of the projection beam is also changed. It is possible to suppress the beam transmission output, thereby improving confidentiality.

Details of other structural features and operations of the present invention will be described with reference to the embodiments described below with reference to the accompanying drawings.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of a proximity fuze control apparatus as an embodiment of the present invention. The proximity fuze control device of this embodiment is mounted on a projectile 40 (see FIG. 3) equipped with a warhead, and includes a proximity fuze device 10, a target guiding device (for example, homing device) 20, and a safety release signal generator 70. ing. The proximity fuze device 10 has a radio wave or light wave target detector 11, a beam setting controller 15, a front / rear attack determiner 16, and a power controller 61 as main components.
And a quadrant converter 62, and various control signals (described later) output from the target guidance device 20 are used to perform power-on control and to enter at a wide range of speeds from ultra-high speed to low speed. The target object 30 is surely detected, and the bullet pieces of the warhead are accurately focused and hit at the optimum timing. Also, the proximity fuze device 10 is
As shown in FIG. 3, the target object 3
0 plume (exhaust gas) 31 or tail pipe 32
It also has a function of avoiding the influence of the above and thereby preventing malfunction.

The target guiding device 20 performs control for capturing and tracking the target object 30, and the relative speed signal VC indicating the relative speed with respect to the target object and the speed of the flying object. Instructed speed signal VM and target object 3
The distance between the target object and the target direction angle signal θ indicating the direction angle in which 0 exists, the target direction indicating signal indicating the position of the target object (azimuth angle signal AZ and elevation angle signal EL), and the target object. And a distance signal SR for instructing. Each of these signals is supplied to the detonation timing generator 14, the beam setting controller 15, the front / rear attack determiner 16, the power controller 61 and the quadrant converter 62 in the proximity fuze device 10.

In the target detector 11 used in this embodiment, the presence of the target object 30 invading in any one of at least four quadrants divided in the entire circumferential direction around the axis of the flying object. The direction can be detected. Here, an apparatus in the case of being divided into four quadrants (quadrants <1> to <4> in FIG. 6) will be described as an example. Regarding this technique, for example, Japanese Patent Application No. 176,484 / 1994 (Japanese Patent Application Laid-Open No. 2-25700) or Japanese Patent Application No. 63-20936 by the present applicant.
No. 5 (JP-A-2-59690).

The target detector 11 emits a reflected radio wave or a reflected light (arrival beam) AR from the target object 30 that has entered the beam AS projected from the beam projection unit 17 (transmission antenna or light beam projector 17a). Input unit 18
(Reception antenna or light receiver 18a),
A level corresponding to the signal intensity is generated for each quadrant and compared with a predetermined threshold level, and detection signals D1 to D4 are output for each quadrant based on the comparison. These detection signals D1 to D4 are sent to the signal comparator 12. Further, the target detector 11 generates a momentary detection signal as a trigger pulse signal SL when the target object 30 is detected, and sends it to the quadrant determiner 13 and the detonation timing generator 14.

The signal comparator 12 is composed of a normally used comparator circuit, compares the signal levels of adjacent quadrant detection beams (detection signals D1 to D4), and judges the result in the form of a binary signal. To the container 13. The quadrant determiner 13 inputs the trigger pulse signal SL from the target detector 11 (a built-in correlation filter module in the case of the radio wave system and a built-in optical receiver in the case of the light wave system) as a latch signal, The binary signal output from the signal comparator 12 is held in response to the latch signal SL, and the existence quadrant of the target object 30 is determined according to the held state. The determined result is sent to the initiation timing generator 14 as the presence quadrant detection signal QD.

The detonation timing generator 14 is the target detector 1
The relative speed signal VC from the target guiding device 20 and the forward / backward attack instruction signals VH, V from the forward / backward attack determiner 16 with reference to the trigger pulse signal SL supplied from 1
T (described later) is used to control the existence quadrant detection signal QD from the quadrant determiner 13 so that the bullet piece of the warhead can hit the preset fatal point of the target object 30 without fail, and the ignition timing signal in the target object existence direction is controlled. To the warhead.

The beam setting controller 15 is used for the target guiding device 2
Based on the relative velocity signal VC supplied from 0, a beam setting control signal VBC used for setting the projection beam angle (pattern formation, beam width) corresponding to the association relative velocity is generated, and the target detector 11 and the beam projection unit 17 are generated. And to the phase shifters 17b and 18b of the beam input unit 18. This beam setting control signal VBC is a target object velocity divided into a plurality of sections, for example, Mach 1.5 or less, 1.5 to
The beam tilt angle α is 80 °, 70 °, 60 for each of the sections 2.5, 2.5 to 4.0, and 4.0 or more.
Delivered in the form of control signals corresponding to ° and 50 °.

The front / rear attack determiner 16 uses the relative speed signal VC from the target guiding device 20, the own speed signal VM and the target direction angle signal θ to attack the target object 30 forward or It has a function to determine which is a back attack. For example, taking a fighter as an example of a lightwave type target detector, in the case of a rear attack as shown in FIG. 3, a trigger from the target detector 11
Based on the relative velocity signal VC based on the pulse signal SL, the time (Tp, Tt) for passing through the positions of the plume 31 and the tail pipe 32, and the time (Tc) for reaching the dead point P of the target object 30, The target piece 30 is a bullet piece
The detonation timing signal (denoted by ΔT) is controlled so as to surely strike the vehicle, and the ignition timing signal in the target object existing direction is sent to the warhead (for example, ΔT = (Tp + Tt) +
Tc).

Similarly, in the case of a forward attack, a trigger
Based on the relative speed signal VC based on the pulse signal SL and the time from the front of the target object 30 to the reaching of the fatal point P, the detonation timing signal is set so that the projectile of the warhead can surely strike the target object 30. Controlled, an ignition timing signal in the direction of the target object is sent to the warhead (for example, ΔT = T
c).

Here, the forward or backward attack is judged by the relative speed signal VC, the own speed signal VM and the target direction angle signal θ.
Is performed as follows. (VC) ≧ (VM) × cos θ [forward attack] (VC) <(VM) × cos θ [backward attack] This determination result is the forward attack instruction signal VH or the backward attack instruction signal VT as the detonation timing generator 14 respectively.
Sent to.

This front / rear attack instruction signal VH / VT
In view of the fact that the position of the vulnerable range W of the target object 30 differs depending on the distance from the front and the distance from the rear as shown in FIG. It is used to control the ignition timing signal of the detonation so that the projectile strikes. The beam projection unit 17 and the beam input unit 18 project a beam in a cone shape toward the front of the projectile in each of four quadrants divided in the entire circumferential direction around the axis of the projectile 40. (Projection beam AS) In addition to the normal function of receiving the reflected wave from the target object 30 by the incoming beam AR, the normally used antenna element 17a is sent based on the beam setting control signal VBC from the beam setting controller 15. By using the phase shifter 17b that changes the power feeding phase of the target object 3
Proper beam setting angles α ₁ , α ₂ , ... according to the penetration speed of 0
It has the function of changing to ... (See Fig. 2).

For example, when the light wave method is used as the target detector 11, the beam tilt angle α _i is changed to a predetermined value by an optical system lens of the light beam projector. As a result, the initiation timing can be easily controlled according to the relative velocity VC with respect to the invading target object 30. Further, the beam setting control signal VBC indicates that the target detector 1
It is sent to the high frequency transmitter (in the case of the radio wave system) or the light wave beam driver circuit (in the case of the light wave system) in 1 to variably control the beam projection output in accordance with the beam setting angle α _i . As shown in FIG. 2, this beam projection output has effective detection distances R ₁ , R ₂ , ..., As the angle increases corresponding to the beam setting angles α ₁ , α ₂ ,. It is controlled so that only a target object that is reduced to a short distance and enters the effective miss distance (MD) can be detected, and unnecessary transmission output is not generated. This contributes to improving confidentiality and reducing power consumption.

Further, the beam setting control signal VBC is not only the beam transmission output but also the transmission pulse and the target detector 11.
It is also used to variably control the effective detection distance R _{i according} to the modulation frequency and the like. For example, the aforementioned Japanese Patent Application No. 63-176.
In the target detector disclosed in Japanese Patent Application Laid-Open No. 2-25700 / 484, a beam setting control signal is input to a voltage control generator in the detector so that the beam setting angle (α _i ) corresponds to a pseudo value. The clock speed of the random code (PN) generator is variably set. For example, when the miss distance (MD) is 10 m, when the effective detection distance (R _i ) of each beam is α = 80 °, it is about 10.2 m, and α = 5.
At 0 °, the clock speed is set to correspond to about 13.2 m.

The power supply controller 61 includes a safety release signal generator 7
In response to the power-on signal P1 from 0, the target guiding device 2
Based on the distance signal SR from 0 and the relative speed signal VC, when the preset distance to just before the target meeting (actually, the voltage setting value according to the distance) is reached, the power-on control signal P2 is generated. This power-on control signal P2 is
Since the relative velocity with the target object 30 (for example, target velocity: Mach 0.9 to 4.0) has a range, it is generated as follows.

As shown in FIGS. 4 and 5, first, the adder 41 adds the voltage value corresponding to the relative speed signal VC to the voltage value of the distance signal SR, and then the comparator 42 adds the added voltage. The value is compared with a predetermined voltage value Vth.
Based on this comparison, when the output voltage value of the adder 41 is less than or equal to the predetermined voltage value Vth, the power-on control signal P2 is generated, and thereby the power supply is started.

The quadrant converter 62, in response to the power-on control signal P2 output from the power controller 61, outputs a target direction instruction signal (azimuth angle signal AZ and elevation angle signal EL) from the target guidance device 20. The signal is converted into a signal indicating the direction of the arrival quadrant of the target object 30 and transmitted as a control signal QC of the target arrival quadrant system only to the target existing quadrant system in the beam setting controller 15.

As shown in FIG. 6, the target direction indicating signals AZ and EL are positive voltage values in the right direction (+ AZ) with respect to the azimuth angle (AZ) when viewed from the rear with respect to the axis of the flying object 40. And the left direction (−AZ) is a negative voltage value, and the elevation angle (EL) is upward (+ E).
L) is represented as a positive voltage value and the downward direction (-EL) is represented as a negative voltage value. The azimuth angle signal AZ and the elevation angle signal EL have voltage values proportional to the angles, as shown in FIGS. 7 (a) and 7 (b), respectively.

As shown in FIG. 6, the azimuth angle (A
Z) and the elevation angle (EL) of the positive and negative polarities of the signals, and as a signal indicating the quadrant in which the target object 30 exists, four types of quadrant control signals QC are provided for each of the quadrants <1> to <4>. Is output to the beam setting controller 15. The target object 30 is, for example, as shown in FIG.
1> and <2>, a negative azimuth angle signal (-AZ) is generated by a normally used comparator circuit in the vicinity of 0 ° of the azimuth angle as shown in FIG. Is set to a voltage threshold value Vth _1, and when the voltage value is less than that, the state without signal (that is, 0V) is set.

The following table shows the relationship between the positive and negative polarity combinations of the target direction indicating signals and the quadrant converter output signals. Table Target direction indication signal Quadrant converter output signal Azimuth angle Elevation angle (AZ) (EL) <1><2><3><4> + -on off off off off --- off on on off off- + off off on Off + + Off Off Off Off On 0 − On On Off Off Off − 0 Off On On Off 0 0 + Off Off On On + + 0 On Off Off On 0 0 On On On On As shown in Figure 6, the target object 30 has quadrant <1 > And <2>, the azimuth angle signal AZ has no voltage value, and the control signals in quadrants <1> and <2> are formed only by the negative voltage signal of the elevation angle signal EL. To be done. Further, with respect to a target object coming near the boundary between adjacent quadrants, only the detection system of the target detector 11 corresponding to both quadrants sandwiching the boundary is operated.

In this embodiment, the azimuth angle signal AZ and the elevation angle signal EL output from the target guiding device 20 are used as the target direction indicating signal, but if the quadrant signal can be output from the target guiding device. Alternatively, the quadrant signal may be used as a control signal indicating the target direction. According to the proximity fuze control device of the present embodiment configured as described above, the following advantages can be obtained.

(1) The relative velocity signal VC from the target guiding device 20 is used to switch and set the inclination angle of the projection beam that is optimum for the association speed with the intrusion target object 30, and to set the intrusion target object over a wide range from ultra-high speed to low speed. On the other hand, the undetectable range due to the projection beam tilt angle as seen in the conventional type is eliminated, and it is easy to set the timing of the detonation signal, so that the projectile of the warhead can be targeted at the optimum timing. You can focus on the object accurately and destroy it surely.

Further, by variably controlling the transmission output and the effective detection distance with respect to the difference in the detection distance due to the inclination of the projection beam angle, the effectiveness of the detection range is improved and unnecessary transmission output is not generated. It is possible to improve confidentiality. (2) Compared with the conventional method of detecting an intrusion target using a plurality of fixed projection beams, the beam projection is performed by switching and setting the projection beam inclination angle according to the relative velocity VC with the target object 30. Since the configuration of the section (antenna) does not require a projector for each beam and does not have a complicated configuration, there is an advantage that its shape and size are small and mounting on a flying object is easy.

Further, as compared with the conventional method using a plurality of fixed projection beams, it is possible to reduce the capacity of the power supply for supply required for the high-power light emitting element such as a high frequency oscillator or a semiconductor laser and its associated circuit. Moreover, power consumption can be reduced. Therefore, there is an advantage that the shape and size of the entire device including the power source are reduced. (3) Various control signals from the target guiding device 20 activate the device to irradiate the projection beam immediately before the meeting with the target object 30. Therefore, it is difficult for the other party to find the beam and the interference is prevented. It can be hard to receive.

(4) Immediately before the meeting with the target object 30, the target detector 1 corresponding to the existing direction of the intruding target object 1
Since only the detection system of 1 is activated,
Power consumption can be significantly reduced. In particular, in the case of a proximity fuze control device using a semiconductor laser that requires a high-power light beam projector, a large-capacity drive power supply is required, so that the effect of reducing power consumption becomes large.

(5) For a heating element such as a semiconductor laser, the conventional structure has a large structural weight for heat control, but by shortening the operation time, thermal control measures can be simplified. As a result, the shape, size, and weight of the device can be reduced, and the weight can be reduced. (6) By controlling the target detection quadrant direction by using the information on the existence direction of the target object 30 output from the target guiding device 20, the interference wave of the light wave (for example, the quadrant other than the existence direction of the target object) (for example, It is possible to avoid reflected light from surrounding clouds and fog, sunlight, reflected light from the ground surface, etc.). This can reduce the occurrence of momentary "saturation" conditions or malfunctions due to unwanted signals,
There is an advantage that the quadrant direction of the target object can be detected reliably.

(7) It is determined whether the attack is a frontal attack or a rearward attack, and based on the result, the detonation timing is controlled so as to strike the fragile area of the target object 30 with a bullet piece. Therefore, it is possible to improve the shooting efficiency of the target object.

[0047]

As described above, according to the present invention, it is impossible to detect a target object in a wide range from ultra high speed to low speed by appropriately changing the inclination angle of the projection beam according to the intrusion speed of the target object. It is possible to easily control the timing of sending the detonation signal to the warhead by eliminating such a range, and to accurately concentrate the bullet pieces of the warhead on the target object at the optimum timing to surely destroy the target object.

Further, since it is configured to supply power only to the detection system corresponding to the quadrant in which the target object exists in the direction immediately before the meeting with the target object to operate it, it is difficult for the other party to find it. And make it less susceptible to interference,
It is possible to significantly reduce the power consumption, and it is possible to eliminate the possibility of a malfunction that has been seen in the conventional type during a rear attack.

Further, it is possible to suppress unnecessary beam transmission output to improve confidentiality, reduce power consumption, and simplify the apparatus configuration.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a proximity fuze control apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a situation of beam projection and beam switching from a beam projection unit in FIG.

FIG. 3 is a diagram showing a relative positional relationship during a rearward attack.

FIG. 4 is a circuit diagram showing a configuration example of a power supply controller in FIG.

FIG. 5 is a diagram for explaining the operation of the power supply controller of FIG.

FIG. 6 is a diagram for explaining the contents of a target direction instruction signal.

7 (a) and 7 (b) are graphs showing operation levels of the quadrant converter with respect to a target direction indicating signal, respectively.

[Explanation of symbols]

10 ... Proximity fuze device 11 ... Target detector (radio wave system or light wave system) 12 ... (Quadrant detection beam) signal comparator 13 ... Quadrant judging device 14 ... Explosion timing generator 15 ... Beam setting controller 16 ... Forward / backward attack Judgment device 17 ... Beam projection unit 18 ... Beam input unit 20 ... Target guidance device 30 ... Target object 40 ... Flying object 61 ... Power supply controller 62 ... Quadrant converter 70 ... Safety release signal generator AZ ... Azimuth angle signal D1-D4 ... Target detection signal EL ... Elevation angle signal P1 ... Power-on signal P2 ... Power-on control signal QC ... Quadrant control signal QD ... Existence quadrant detection signal R _i ... Effective detection distance SL ... Target detection instruction signal (trigger pulse signal) VBC ... beam setting control signal VC / ... relative speed signal VM ... ship speed signal VH VT ... front / rear attack instruction signal alpha _i ... projection beam set Degree (angle of inclination) θ ... target direction angle signal

Claims (5)

[Claims] 1. A device which is mounted on a projectile equipped with a warhead and which commands an ignition operation of ammunition of the warhead when the projectile approaches the target object (30), A target guiding means that performs control for tracking and outputs a relative velocity signal (VC) that indicates a relative velocity with the target object and a distance signal (SR) that indicates a distance between the target object ( 20) and a beam of radio waves or light waves at a set angle (α _i ) toward the front of the projectile in each quadrant of at least four quadrants divided in all directions around the axis of the projectile. A beam projecting means (17) for projecting the beam in a cone shape, and a detection signal (D1) corresponding to the signal intensity for each quadrant by detecting a reflected wave from the target object with respect to the projected beam.
~ D4) output target detector (11) and each output detection signal are compared with adjacent quadrant signal levels, and the presence quadrant of the target object is determined based on the comparison result. A circuit (12, 13) for outputting a signal (QD), a means (14) for instructing the ignition operation based on the existing quadrant detection signal and the relative speed signal, and a means for instructing the projection beam based on the relative speed signal. Means (15) for generating a control signal (VBC) for setting the projection angle
A means (70) for outputting a power-on signal (P1) for instructing power-on when detecting that the flying object is flying under a predetermined condition, and the relative unit in response to the power-on signal. Means (61) for outputting a power-on control signal (P2) for instructing the supply of power based on the speed signal and the distance signal, and the projection beam for the beam projection means based on the generated control signal. Variably controlling the projection setting angle (α _i ), and controlling the target detector to operate only the detection system corresponding to the direction in which the target object exists based on the power-on control signal. Proximity fuze control device. 2. The proximity fuze controller according to claim 1, wherein the target guiding means (20) further outputs an azimuth angle signal (AZ) and an elevation angle signal (EL) indicating the position of the target object. A means (6) for converting the azimuth angle signal and the elevation angle signal into a quadrant control signal (QC) which indicates the direction of arrival of the target object in response to the power-on control signal.
2), which generates the control signal based on the converted quadrant control signal and the relative velocity signal, thereby supplying power to only the detection system corresponding to the direction in which the target object exists with respect to the target detector. Proximity fuze control device characterized by supplying. 3. The target guiding means (20) further includes a target direction angle signal (θ) indicating a direction angle at which the target object exists, and a velocity signal (V) indicating a velocity of the flying object.
The proximity fuze control device according to claim 1 or 2, which outputs M), determines whether the attack is a forward attack or a backward attack based on the target direction angle signal, the own speed signal, and the relative speed signal. And a means (16) for outputting a forward / backward attack instruction signal (VH, VT) for instructing the result of the determination, wherein the output forward / backward attack instruction signal, the existing quadrant detection signal, and the relative speed are provided. A proximity fuze control device characterized in that the ignition operation is instructed based on a signal. 4. The proximity fuze control device according to claim 2, wherein the effective detection distance (R _{i) of the} target object to the target detector is based on the azimuth angle signal, the elevation angle signal, and the relative speed signal. ) A proximity fuze control device comprising means for controlling the above. 5. The proximity fuze control device according to claim 2, wherein the target detector outputs a target detection instruction signal (SL) at the time when the target object is detected by the projection beam, and the target detection instruction signal is output. Also, a proximity fuze control device is characterized in that the ignition operation is instructed based on the presence quadrant detection signal and the relative speed signal.